5. number (left of red line)and also there, if not conventional "skin", whether (if) skeleton, skull- only, or alcoholic; name of species, sex, breeding condition, measurements, weight, and, on occasion, color of iris and soft parts. Use a vernacular name of the species, if you are not sure of the scientific name. Write full notes, even at risk of entering much information of apparently little value. One cannot anticipate the needs of the future, when notes and collections are worked up. The following are suggested topics, but do not restrict yourself to these alone. Be alert for new ideas and new facts. Describe vegetation (saving plant-press samples of species not positively known), nature of ground, slope exposure, and drainage of each belt of animal life collected in. Describe exact location of trap lines, referring to your topographic maps, and also enter a sketch, in profile, or surface view, or both, to illustrate the location and relations of the dif- ferent habitats crossed. Properly marked maps for each region worked should ultimately be bound in with the field notes. Keep record of closeness of settings of traps, distance covered, and results of each night's trapping; give number and type of traps put out in each habitat and number of animals of each species captured in each habitat (whether or not preserved), with sex, age, and breeding condition of each animal. Keep full record of breeding data: Number and approximate size (length) of embryos, or of young found in nests; state of incubation in eggs. Dig out burrows if practicable; make drawings to scale, plan and eleva- tion; describe fully. Record food plants; keep specimens for identifica- tion where not known by a definite name; preserve cheek pouch contents, contents of gullets, stomachs of mammals and large birds. If these are not saved, identify and record contents.